Find the value of x and y given that p//q. Type answers alphabetically, and separate by a comma and a space

Mathematics

1 answer:

butalik [34]4 years ago

8 0

Answer:

Step-by-step explanation:

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A distribution of scores for a test of life stressors has a mean of µ = 125 and standard deviation of σ = 15. The researcher cal

laila [671]

Answer:

The mean and standard deviation for the z-scores in this distribution are 0 and 1 respectively.

Step-by-step explanation:

Let the random variable X follow a Normal distribution with mean μ and standard deviation σ.

The z-scores are standardized form of the raw scores X. It is computed by subtracting the mean (μ) from the raw score x and dividing the result by the standard deviation (σ).

$z=\frac{x-\mu}{\sigma}$

These z-scores also follow a normal distribution.

The mean is:

$E(z)=E[\frac{x-\mu}{\sigma} ]=\frac{1}{\sigma}\times [E(x)-\mu] =\frac{1}{\sigma}\times [\mu-\mu]=0$

The standard deviation is:

$Var(z)=Var[\frac{x-\mu}{\sigma} ]=\frac{1}{\sigma^{2}}\times [Var(x)-Var(\mu)] =\frac{\sigma^{2}-0}{\sigma^{2}}=1\\SD(z)=\sqrt{Var(z)}=1$

Thus, the mean and standard deviation for the z-scores in this distribution are 0 and 1 respectively.

8 0

3 years ago

A scientist wants to test whether moon rock is made of the same elements as Earth rock. The scientist is testing a(n): Please ch

joja [24]

Answer:

Hypothesis

Step-by-step explanation:

The scientist want to test an hypothesis which can be stated has the rock on earth contain the same as the moon which can call null hypothesis and the rock on earth did not contain the same element as the moon; the alternate hypothesis and both hypothesis can be tested by using experiment.

4 0

3 years ago

What is the answer. Pls tell me quick

daser333 [38]

I believe your answer is 4 4/9 as a mixed fraction but it can also be 40/9. Hope this helps :)

3 0

3 years ago

Read 2 more answers

I need help on question 8 asap

Mekhanik [1.2K]

Answer:

-13